Test ID:	1.3.6.1.4.1.25623.1.0.105675
Category:	CISCO
Title:	Cisco IOS and IOS XE Software IKEv1 State Machine Denial of Service Vulnerability
Summary:	A vulnerability in the Internet Key Exchange (IKEv1) state machine of Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to tear down valid IPsec connections, resulting in a partial denial of service (DoS) condition.;;The vulnerability is due to insufficient condition checks in the IKEv1 state machine. An attacker could exploit this vulnerability by sending a spoofed, specific IKEv1 packet to an endpoint of an IPsec tunnel. A successful exploit could allow the attacker to tear down IPsec tunnels that terminate on the endpoint, causing a partial DoS condition.;;Cisco has released software updates that address this vulnerability. There are no workarounds that mitigate this vulnerability.
Description:	Summary: A vulnerability in the Internet Key Exchange (IKEv1) state machine of Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to tear down valid IPsec connections, resulting in a partial denial of service (DoS) condition. The vulnerability is due to insufficient condition checks in the IKEv1 state machine. An attacker could exploit this vulnerability by sending a spoofed, specific IKEv1 packet to an endpoint of an IPsec tunnel. A successful exploit could allow the attacker to tear down IPsec tunnels that terminate on the endpoint, causing a partial DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that mitigate this vulnerability. Solution: See the referenced vendor advisory for a solution. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2015-6429 Cisco Security Advisory: 20151218 Cisco IOS and IOS XE Software IKEv1 State Machine Denial of Service Vulnerability http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151218-ios http://www.securitytracker.com/id/1034505
Copyright	Copyright (C) 2016 Greenbone Networks GmbH

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